As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED A FOUL ODOR IN THE CABIN AND COCKPIT CAUSING HEADACHES AND RESPIRATORY ISSUES WITH PASSENGERS AND CREW MEMBERS. MAINTENANCE TROUBLESHOT THE SOURCE OF THE ODOR TO THE APU BLEED. MAINTENANCE PERFORMED OPS CHECK OF THE BLEED 2 SYSTEM REF EMB 170/175 AMM 36-00-00 AND THE RIGHT COOLING PACK REF EMB 170/175 AMM 21-51-00 WITH NO DEFECTS FOUND.